Abstract:
Rockmass*selasticmodulusiscloselyrelatedtoitscompositions,innerstructuralcharacteris⁃ ticsandstress⁃strainstate*ByassumingtheelasticmodulusofporetRockmass*selasticmodulusiscloselyrelatedtoitscompositions,innerstructuralcharacteris⁃ ticsandstress⁃strainstate*Byassumingtheelasticmodulusofporethatasapartofrockiszero,arela⁃ tionalmodelbetweentheelasticmodulusofthewholerockandcomponentaswellasvolumefractions wasderivedinthispaper*Theparametersinthismodelofdeeproofsandstoneweredeterminedbythe experimentalmeasurementsofdifferentbrittlerockssuchasgranite,deepcoalrock,roofsandstoneand highcementationsandstonepreparedbyartificialproportioning*Inaddition,theacousticemissionexper⁃ imentofcyclicloadingandunloadingondeeproofsandstonewasconductedtodeterminethechange rulebetweenelasticmodulusintherockelasticphaseandporosity*Theexperimentalresultsshowthat theaverageerrorbetweenthetheoreticalcalculatedvalueandexperimentalmeasurementvalueofthee⁃ lasticitymoduluswas2*11%,whichprovedthatrelationmodelbetweenelasticmodulusandporosity understresswasapplicable* hatasapartofrockiszero,arela⁃ tionalmodelbetweentheelasticmodulusofthewholerockandcomponentaswellasvolumefractions wasderivedinthispaper*Theparametersinthismodelofdeeproofsandstoneweredeterminedbythe experimentalmeasurementsofdifferentbrittlerockssuchasgranite,deepcoalrock,roofsandstoneand highcementationsandstonepreparedbyartificialproportioning*Inaddition,theacousticemissionexper⁃ imentofcyclicloadingandunloadingondeeproofsandstonewasconductedtodeterminethechange rulebetweenelasticmodulusintherockelasticphaseandporosity*Theexperimentalresultsshowthat theaverageerrorbetweenthetheoreticalcalculatedvalueandexperimentalmeasurementvalueofthee⁃ lasticitymoduluswas2*11%,whichprovedthatrelationmodelbetweenelasticmodulusandporosity understresswasapplicable*